zaynebsherwani zaynebsherwani

08-02-2017
Mathematics

contestada

18 to 29=10%

30 to 49=30%

Suppose Max knows that 45 people with ages of 18 to 29 voted. Without using a calculator he then says 135 people with ages of 30 to 49. Is he correct? How might Max have come up with his answer so quickly?

Respuesta :

Kerbal27 Kerbal27

08-02-2017

45 people is 10% of 450.
So how many people is 30% of 450.

1. Multiply (45)(3) = 135. Because 30% is 3 times 10%.
2. Multiply (450)(.3) = 135. Because .3 = 30% in decimal form.

Answer Link

Otras preguntas

5. Which one of the following statements is true for spell checkers? A. Most spell checkers flag inappropriate word usage. B. A word you know to b

In "The Gift of the Magi," why is Della crying at the start of the story? A. She finds out that Jim does not want her to buy him a gift B. She and Jim are bein

Many groups worked diligently for justice. What is the sentence’s complete prepositional phrase?

The ability for a senator to delay passage of a bill through continuous talking is known as a a. colloquy. b. requirement of the Bill of Rights. c. filibuste

Which of the following organisms lives near the surface of aquatic biomes because it needs sunlight to survive? a. phytoplankton b. zooplankton c. sturgeon d. m

Achieving a balanced diet is best done by a. eating nothing but fruits. b. getting the right number of Calories each day. c. eating at least one item from ea

Read these lines from Macbeth: The west yet glimmers with some streaks of day: Now spurs the lated traveller apace, To gain the timely inn; and near approaches

The term used to describe an elected official serving a final term in office is A. whip. B. lame duck. C. yellow dog. D. political ghost.

Which Asian country is currently doing nuclear weapons testing? A. South Korea B. Japan C. China D. North Korea

Perhaps, it is not remarkable that a 40-year-old woman will be running Pikes Peak, Colorado’s tallest mountain. Then, you realize this particular woman –